Import a font by dragging a TrueType Font - a .ttf file - from the Explorer (Windows) or Finder (OS X) into the Project View.

Выберите в Project View импортированный шрифт.

Choose GameObject > Create Other > 3D Text.
You have now created a text mesh with your custom TrueType Font. You can scale the text and move it around using the Scene View’sTransform controls.

Note: If you want to change the font for a Text Mesh, need to set the component’s font property and also set the texture of the font material to the correct font texture. This texture can be located using the font asset’s foldout. If you forget to set the texture then the text in the mesh will appear blocky and misaligned.